CN108224416B - Burner with a burner head - Google Patents
Burner with a burner head Download PDFInfo
- Publication number
- CN108224416B CN108224416B CN201810048224.8A CN201810048224A CN108224416B CN 108224416 B CN108224416 B CN 108224416B CN 201810048224 A CN201810048224 A CN 201810048224A CN 108224416 B CN108224416 B CN 108224416B
- Authority
- CN
- China
- Prior art keywords
- coal powder
- channel
- light
- coal
- burner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
- F23D2201/20—Fuel flow guiding devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention provides a combustor, which comprises a combustor body (4) and a separating part (1) connected with the combustor body (4), wherein the separating part (1) is provided with a powder feeding part, a thick coal powder sub-channel (1a) and a thin coal powder sub-channel (1 b); the combustor body (4) is provided with a concentrated coal powder channel (4a) communicated with the concentrated coal powder sub-channel (1a) and a light coal powder channel (4b) communicated with the light coal powder sub-channel (1b), and the concentrated coal powder channel (4a) and the light coal powder channel (4b) are mutually independent. The burner provided by the invention effectively improves the concentration separation effect of the pulverized coal; and different nozzle wind speeds can be set according to the coal quality condition, and the flow area or the internal structure of the thick coal powder channel and the thin coal powder channel can be adjusted, so that the flow velocity of the thick coal powder airflow in the thick coal powder channel and the flow velocity of the thin coal powder airflow in the thin coal powder channel can be conveniently adjusted, and the burnout performance is improved.
Description
Technical Field
The invention relates to the technical field of coal combustion equipment, in particular to a combustor.
Background
With the stricter requirements of national environmental regulations on the emission of nitrogen oxides, the selection of the burner becomes a necessary choice for the emission reduction of the nitrogen oxides in the boiler.
The existing burner mainly realizes the inhibition effect on the generation of NOx and the like by a method of air classification combustion and pulverized coal concentration and dilution separation combustion.
However, in the burner, the concentration separation of the pulverized coal airflow is simply carried out in the primary air duct by means of inertia separation, and the concentration separation effect is poor (not true physical isolation). After the pulverized coal airflow jets into the hearth, the characteristics of high peripheral wind speed, high pulverized coal concentration, low central wind speed and low pulverized coal concentration are presented. Therefore, the large-particle coal powder has short retention time in the hearth and is not beneficial to the burnout of the coal powder. Therefore, the concentration separation effect of the pulverized coal in the combustor is poor, the burnout performance is not high, and the emission of nitrogen oxides is high.
Therefore, how to improve the coal dust concentration separation effect and burnout performance is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a burner to improve the separation effect of coal dust concentration and burnout performance.
In order to achieve the purpose, the invention provides the following technical scheme:
a burner comprises a burner body and a separation part connected with the burner body, wherein the separation part is provided with a powder feeding part, a concentrated coal powder sub-channel and a light coal powder sub-channel;
the combustor body is provided with a thick coal powder channel communicated with the thick coal powder sub-channel and a thin coal powder channel communicated with the thin coal powder sub-channel, and the thick coal powder channel and the thin coal powder channel are independent.
Preferably, in the above burner, the rich coal powder passage is an annular pipe, and the lean coal powder passage is a central pipe penetrating through the middle of the rich coal powder passage.
Preferably, the burner further comprises a flow guiding rib arranged in the concentrated coal powder channel;
the number of the flow guide ribs is multiple and is uniformly distributed along the circumferential direction of the concentrated coal powder channel.
Preferably, in the above burner, a plurality of guide ribs form a guide rib group;
the guide fins in the same guide fin group are positioned at the same axial position of the concentrated coal powder channel.
Preferably, in the above burner, the number of the flow guide rib groups is multiple and is distributed along the axial direction of the rich coal powder channel.
Preferably, in the above burner, the flow guiding fins in two adjacent sets of flow guiding fin sets are arranged along the circumferential direction of the rich coal powder channel in a staggered manner.
Preferably, in the above-mentioned burner, the burner further includes a venturi rectifying device for rectifying the rich coal airflow flowing out from the rich coal powder sub-channel, and the venturi rectifying device is disposed between the separation member and the burner body.
Preferably, in the above burner, a light pulverized coal intake device is disposed between the venturi rectifying device and the burner body;
the light coal powder inlet device is provided with a thick coal powder channel section and a light coal powder channel section;
the dense coal powder channel section is communicated with the air outlet end of the Venturi rectifying device and the air inlet end of the dense coal powder channel;
the light coal powder channel section is communicated with the air outlet end of the light coal powder sub-channel and the light coal powder channel.
Preferably, in the above burner, the pulverized coal inlet device includes a connecting pipe and a sleeve pipe set;
the sleeve group comprises a light coal powder central pipe, a thick coal powder guide pipe and an outer sleeve which are sleeved from inside to outside;
the light coal powder passage section is formed by sequentially communicating a light coal powder annular cavity between the thick coal powder flow guide pipe and the external sleeve, a pipe cavity in the middle of the connecting pipe and a light coal powder hollow cavity of the light coal powder central pipe; the light coal powder annular cavity is communicated with the air outlet end of the light coal powder sub-channel, and the light coal powder hollow cavity is communicated with the light coal powder channel;
the concentrated coal powder channel section is an annular cavity between the light coal powder central pipe and the concentrated coal powder flow guide pipe.
Preferably, in the above burner, the number of the connecting pipes is plural and is uniformly distributed along the circumferential direction of the outer sleeve.
Preferably, in the above burner, the light pulverized coal inlet device further includes support ribs supported on both sides of the concentrated pulverized coal passage section.
Preferably, in the above burner, the supporting rib and the connecting pipe are both supporting bodies;
the supporting bodies are uniformly distributed along the circumferential direction of the outer sleeve.
Preferably, in the above burner, the venturi rectifying device has an intermediate straight pipe inside to communicate the light pulverized coal sub-passage and the light pulverized coal passage.
The burner provided by the invention ensures that the thick coal powder airflow and the thin coal powder airflow are injected into a hearth through different channels by making the thick coal powder channel and the thin coal powder channel independent from each other, thereby realizing real physical isolation. Through the arrangement, the concentration separation effect of the coal powder is effectively improved; and different nozzle wind speeds can be set according to the coal quality condition, and the flow area or the internal structure of the thick coal powder channel and the thin coal powder channel can be adjusted, so that the flow velocity of the thick coal powder airflow in the thick coal powder channel and the flow velocity of the thin coal powder airflow in the thin coal powder channel can be conveniently adjusted, and the burnout performance is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a first structure of a burner according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a light pulverized coal inlet device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a light pulverized coal inlet device according to an embodiment of the present invention;
FIG. 4 is a schematic partial cross-sectional view taken along the plane B-B in FIG. 1;
FIG. 5 is a schematic partial cross-sectional view taken along plane C-C of FIG. 1;
FIG. 6 is a schematic partial cross-sectional view taken along plane D-D of FIG. 1;
fig. 7 is a schematic view of a second structure of the burner according to the embodiment of the present invention.
Detailed Description
The invention provides a combustor, which is used for improving the coal powder concentration and dilution separation effect and the burnout performance.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a burner, including a burner body 4, and further including a separation component 1 connected to the burner body 4, where the separation component 1 includes a powder inlet portion, a dense coal powder sub-channel 1a, and a dilute coal powder sub-channel 1 b; the burner body 4 is provided with a thick coal powder passage 4a communicated with the thick coal powder sub-passage 1a and a thin coal powder passage 4b communicated with the thin coal powder sub-passage 1b, and the thick coal powder passage 4a and the thin coal powder passage 4b are independent.
According to the burner provided by the embodiment of the invention, the thick coal powder channel 4a and the thin coal powder channel 4b are mutually independent, so that thick coal powder airflow and thin coal powder airflow are ensured to be injected into a hearth through different channels, and true physical isolation is realized. Through the arrangement, the concentration separation effect of the coal powder is effectively improved; moreover, different nozzle wind speeds can be set according to the coal quality condition, the flow areas or the internal structures of the thick coal powder channel 4a and the thin coal powder channel 4b can be adjusted, the flow speed of the thick coal powder airflow in the thick coal powder channel 4a and the flow speed of the thin coal powder airflow in the thin coal powder channel 4b can be conveniently adjusted, and the burnout performance is improved.
Further, the rich pulverized coal passage 4a is an annular pipe, and the lean pulverized coal passage 4b is a central pipe penetrating through the middle of the rich pulverized coal passage 4 a.
It can be understood that the concentrated coal dust gas stream contains a majority of coal dust particles and 50% to 60% of air volume; the light pulverized coal stream contains a very small amount of small pulverized coal particles and an air volume of about 40% to 50%.
The thick coal powder channel 4a is arranged as an annular pipeline sleeved outside the thin coal powder channel 4b, namely, when the thick coal powder is injected into a hearth, the thick coal powder airflow is outside the thin coal powder airflow, and the thick coal powder airflow is contacted with smoke and is ignited firstly; the light pulverized coal airflow is ignited behind the inner side. Through the arrangement, deep fuel staged combustion is realized. The flow area (cross-sectional area) of the light pulverized coal passage 4b is small, and the distance along the axial direction is long, so that the cross section of the light pulverized coal passage 4b along the axial direction is a long and narrow rectangle. Through the arrangement, the condition that the light pulverized coal airflow enters the central pipeline from the outside is realized, and the influence on the uniformity of the thick pulverized coal airflow is reduced.
The burner provided by the embodiment of the invention also comprises a flow guide rib 5 arranged in the concentrated coal powder channel 4 a; the number of the flow guiding ribs 5 is a plurality and is evenly distributed along the circumferential direction of the concentrated coal powder channel 4 a. Through the arrangement, the cross section of the concentrated coal powder channel 4a is equally divided by the flow guide ribs 5, so that the uniformity of the concentrated coal powder airflow in the concentrated coal powder channel 4a is effectively improved.
The overall length (length along the airflow flowing direction) of the position of the flow guiding rib 5 may be 1/2 or 1/3 length of the pulverized coal light passage 4b, and of course, other values may also be set, which are not described in detail herein and are all within the protection range.
Further, a plurality of guide ribs 5 form a guide rib group; the flow guiding fins 5 in the same flow guiding fin group are positioned at the same axial position of the concentrated coal powder channel 4 a. Through the arrangement, the uniformity of the concentrated coal powder airflow is further improved.
Further, the number of the flow guiding rib groups is multiple and is distributed along the axial direction of the concentrated coal powder channel 4 a. As shown in fig. 1, the number of the flow guiding rib groups is three, and the flow guiding rib groups are respectively located on the section B-B, the section C-C and the section D-D.
And the guide fins 5 in the adjacent two groups of guide fin groups are arranged along the circumferential direction of the concentrated coal powder channel 4a in a staggered manner. Through the arrangement, the uniformity of the concentrated coal powder airflow is further improved.
As shown in fig. 4, 5 and 6, in the guide rib group located at the section B-B, the included angle between the guide rib 5 close to the vertical centerline of the burner and the vertical centerline of the burner is a; in the guide fin group positioned on the C-C section, an included angle between a guide fin 5 close to the vertical center line of the combustor and the vertical center line of the combustor is b; in the guide rib group positioned on the D-D section, the included angle between the guide rib 5 close to the vertical center line of the combustor and the vertical center line of the combustor is c. Through the arrangement, the thick coal powder airflow in the thick coal powder channel 4a is further homogenized.
In this embodiment, the angle a is 45 °, the angle b is 22.5 °, and the included angle c is two-22.5 ° from right-hand to positive. Through the arrangement, the air flow can flow along the circumferential direction of the concentrated coal powder channel 4a in a staggered manner after passing through the flow guide rib 5, the disturbance effect is generated on the concentrated coal powder air flow in the concentrated coal powder channel 4a, and the uniformity of the concentrated coal powder air flow is further improved.
The burner provided by the embodiment of the invention further comprises a Venturi rectifying device 2 for rectifying the concentrated coal powder airflow flowing out of the concentrated coal powder sub-channel 1a, wherein the Venturi rectifying device 2 is arranged between the separating part 1 and the burner body 4. With the above arrangement, the dense pulverized coal flow flowing into the burner body 4 is regulated.
As shown in fig. 2, a light pulverized coal inlet device 3 is arranged between the venturi rectifying device 2 and the burner body 4; the light coal powder inlet device 3 is provided with a thick coal powder channel section 3a and a light coal powder channel section 3 b; the dense coal powder channel section 3a is communicated with the air outlet end of the Venturi rectifying device 2 and the air inlet end of the dense coal powder channel 4 a; the light coal powder passage section 3b is communicated with the air outlet end of the light coal powder sub-passage 1b and the light coal powder passage 4 b. Through the arrangement, the light coal powder airflow flowing out of the light coal powder sub-channel 1b can conveniently enter the light coal powder channel 4 b. Of course, other configurations are possible, as shown in FIG. 7.
In the present embodiment, the pulverized coal inlet 3 includes a connection pipe 33 and a sleeve pipe set; the sleeve group comprises a light coal powder central pipe 35, a thick coal powder guide pipe 32 and an external sleeve 31 which are sleeved from inside to outside; the light coal powder passage section 3b is formed by sequentially communicating a light coal powder annular cavity 3b1 between the thick coal powder draft tube 32 and the outer sleeve 31, a tube cavity 3b2 in the middle of the connecting tube 33 and a light coal powder hollow cavity 3b3 of the light coal powder central tube 35; the light coal powder annular cavity 3b1 is communicated with the air outlet end of the light coal powder sub-channel 1b, and the light coal powder hollow cavity 3b3 is communicated with the light coal powder channel 4 b; the dense coal powder passage section 3a is an annular cavity between the light coal powder central pipe 35 and the dense coal powder draft pipe 32. Through the arrangement, the uniformity of the thick coal powder airflow and the thin coal powder airflow in the thin coal powder air inlet device 3 is ensured.
Of course, the outer sleeve 31 may not be provided, and the tube cavity 3b2 may be directly communicated with the outlet end of the pulverized coal bypass 1 b.
Further, the sleeve set further comprises a first isolation pipe 34 sleeved between the light coal powder central pipe 35 and the thick coal powder flow guide pipe 32, and the thick coal powder passage section 3a is an annular cavity between the first isolation pipe 34 and the thick coal powder flow guide pipe 32; a sandwich structure is formed between the first isolation pipe 34 and the pulverized coal raw pipe 35. By adjusting the interlayer structure, the separation distance of the thick pulverized coal airflow and the thin pulverized coal airflow in the radial direction is conveniently adjusted, so that the thin pulverized coal passage section 3b is communicated with the air outlet end of the thin pulverized coal sub-passage 1b, and the thick pulverized coal passage section 3a is communicated with the thin pulverized coal passage 4 b.
Further, the number of the connection pipes 33 is plural and is uniformly distributed along the circumferential direction of the outer sleeve 31. Through the arrangement, the air inlet uniformity is ensured.
In another embodiment, as shown in fig. 3, the pulverized coal inlet 3 further includes support ribs 36 supported on both sides of the concentrated pulverized coal passage section 3 a. That is, in the present embodiment, the support rib 36 is disposed between the first partition pipe 34 and the rich coal draft pipe 32. Through the arrangement, the structural stability of the concentrated coal powder channel section 3a is ensured. Wherein, the dense coal powder passage section 3a is an annular structure, and the two sides of the dense coal powder passage section 3a are the inner side and the outer side of the dense coal powder passage section 3 a.
Further, the supporting rib 36 and the connecting tube 33 are supporting bodies; the support bodies are evenly distributed along the circumference of the outer sleeve 31. Through the arrangement, on the basis of ensuring the structural stability of the dense coal powder channel section 3a, the uniformity of dense coal powder airflow in the dense coal powder channel section 3a is further ensured.
As shown in fig. 7, the venturi rectifying device 2 has an intermediate straight duct inside to communicate the light pulverized coal branch passage 1b and the light pulverized coal passage 4 b.
The combustor provided by the embodiment of the invention further comprises axial swirl vanes 6 arranged in the light coal powder channel 4 b. Through the arrangement, the ground light pulverized coal airflow is injected into the hearth in a certain rotation mode, so that the combustion effect is improved.
Preferably, the outlet of the pulverized coal passage 4b is a throat, and through the arrangement, the pulverized coal flow is injected into the hearth at a high speed.
The burner provided by the embodiment of the invention further comprises an inner secondary air structure 7, wherein the inner secondary air structure 7 is provided with an inner secondary air annular channel sleeved outside the burner body 4, and an outlet of the inner secondary air annular channel is arranged on the same side as an outlet of the burner body 4. The combustor still includes outer overgrate air structure 8, and outer overgrate air structure 8 has the outer overgrate air annular channel of cover locating the interior overgrate air structure 7 outside, and the export of outer overgrate air annular channel sets up with the export homonymy of combustor body 4. With the above arrangement, such a flow field is realized: the light coal powder airflow is injected into the hearth at a high wind speed, so that the high rigidity is kept; the dense coal powder airflow is injected into the hearth at a lower wind speed on the premise of not generating powder accumulation and burning loss of the combustor. A narrow annular backflow area is formed between the outer side of the concentrated coal dust airflow and the inner secondary air airflow. The outside of the thick pulverized coal airflow contacts with high-temperature flue gas, the pulverized coal concentration is high, the ignition point is low, advanced ignition is realized, a large amount of volatile matters are separated out, and nitrogen oxides are reduced. Because the light coal dust airflow has stronger rigidity, the device can play a role of guiding the thick coal dust airflow with lower wind speed, maintain the shape of flame, increase the flame stroke, enable the thick coal dust airflow to stay for a longer time in reducing atmosphere and reduce the emission of nitrogen oxides.
It is also possible to provide only one secondary air structure, which will not be described in detail here.
Swirl vanes are arranged in the inner secondary air annular channel and/or the outer secondary air annular channel. So as to carry out rotational flow operation on the inner secondary air and the outer secondary air. Wherein, the swirl vane can be an axial swirl vane or a tangential swirl vane.
Preferably, the spouts of the inner and/or outer secondary air annular passages are flared outwardly. Through the arrangement, the primary isolation of secondary air and pulverized coal airflow is realized.
Further, the separating component 1 is an elbow separating component, and the separating component 1 is provided with a bending part; the concentrated coal powder sub-channel 1a is a pipeline communicated with one side of the bending part back to the bending direction of the bending part, the light coal powder sub-channel 1b is a pipeline communicated with one side of the bending part facing to the bending direction of the bending part, and the concentrated coal powder sub-channel 1a and the light coal powder sub-channel 1b are mutually independent.
In another embodiment, a flow guide plate is arranged in the middle of the bending part along the bending direction, the concentrated coal powder sub-channel 1a is a channel of the bending part back to one side of the bending direction, and the diluted coal powder sub-channel 1b is a channel of the bending part towards one side of the bending direction.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A burner comprises a burner body (4) and a separating component (1) connected with the burner body (4), wherein the separating component (1) is provided with a powder feeding part, a concentrated coal powder sub-channel (1a) and a light coal powder sub-channel (1 b);
the high-efficiency coal burner is characterized in that the burner body (4) is provided with a thick coal powder channel (4a) communicated with the thick coal powder sub-channel (1a) and a thin coal powder channel (4b) communicated with the thin coal powder sub-channel (1b), and the thick coal powder channel (4a) and the thin coal powder channel (4b) are mutually independent;
the burner also comprises a Venturi rectifying device (2) used for rectifying the thick coal airflow flowing out of the thick coal powder sub-channel (1a), wherein the Venturi rectifying device (2) is arranged between the separating part (1) and the burner body (4); a light pulverized coal air inlet device (3) is arranged between the Venturi rectifying device (2) and the burner body (4);
the light coal powder air inlet device (3) is provided with a thick coal powder channel section (3a) and a light coal powder channel section (3 b);
the concentrated coal powder channel section (3a) is communicated with the air outlet end of the Venturi rectifying device (2) and the air inlet end of the concentrated coal powder channel (4 a);
the light coal powder channel section (3b) is communicated with the air outlet end of the light coal powder sub-channel (1b) and the light coal powder channel (4 b);
the light pulverized coal gas inlet device (3) comprises a connecting pipe (33) and a sleeve pipe group;
the sleeve group comprises a light coal powder central pipe (35), a thick coal powder guide pipe (32) and an external sleeve (31) which are sleeved from inside to outside;
the light coal powder passage section (3b) is formed by sequentially communicating a light coal powder annular cavity (3b1) between the concentrated coal powder draft tube (32) and the outer sleeve (31), a tube cavity (3b2) in the middle of the connecting tube (33) and a light coal powder hollow cavity (3b3) of the light coal powder central tube (35); the light coal powder annular cavity (3b1) is communicated with the air outlet end of the light coal powder sub-channel (1b), and the light coal powder hollow cavity (3b3) is communicated with the light coal powder channel (4 b);
the concentrated coal powder passage section (3a) is an annular cavity between the light coal powder central pipe (35) and the concentrated coal powder flow guide pipe (32).
2. A burner according to claim 1, characterized in that the rich coal passage (4a) is an annular duct and the lean coal passage (4b) is a central duct running through the middle of the rich coal passage (4 a).
3. The burner according to claim 2, characterized by further comprising flow guiding ribs (5) arranged in the rich coal powder channel (4 a);
the number of the flow guide ribs (5) is multiple and the flow guide ribs are uniformly distributed along the circumferential direction of the concentrated coal powder channel (4 a);
the guide ribs (5) form a guide rib group;
the flow guide ribs (5) in the same flow guide rib group are positioned at the same axial position of the concentrated coal powder channel (4 a).
4. A burner according to claim 3, wherein the number of said groups of flow-guiding ribs is plural and distributed along the axial direction of said pulverized coal-rich passage (4 a);
and the flow guide ribs (5) in the two adjacent groups of flow guide rib groups are arranged along the circumferential direction of the concentrated coal powder channel (4a) in a staggered manner.
5. Burner according to claim 1, characterized in that said connecting pipes (33) are in number and are uniformly distributed along the circumference of said outer sleeve (31).
6. A burner according to claim 1, characterized in that said pulverized coal light inlet means (3) further comprises support ribs (36) supported on both sides of said pulverized coal rich passage section (3 a).
7. Burner according to claim 6, wherein said supporting rib (36) and said connecting tube (33) are both supporting bodies;
the supporting bodies are evenly distributed along the circumference of the outer sleeve (31).
8. The burner according to claim 1, characterized in that it further comprises a venturi fairing (2) for rectifying the flow of rich coal exiting from said rich coal subchannel (1a), said venturi fairing (2) being arranged between said separation member (1) and said burner body (4); the venturi rectifying device (2) is internally provided with a middle straight pipeline which is communicated with the light coal powder sub-channel (1b) and the light coal powder channel (4 b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810048224.8A CN108224416B (en) | 2018-01-18 | 2018-01-18 | Burner with a burner head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810048224.8A CN108224416B (en) | 2018-01-18 | 2018-01-18 | Burner with a burner head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108224416A CN108224416A (en) | 2018-06-29 |
| CN108224416B true CN108224416B (en) | 2020-01-03 |
Family
ID=62667586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810048224.8A Active CN108224416B (en) | 2018-01-18 | 2018-01-18 | Burner with a burner head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108224416B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0490412A (en) * | 1990-08-06 | 1992-03-24 | Mitsubishi Heavy Ind Ltd | Pulverized coal distributor |
| JP2001059604A (en) * | 1999-08-19 | 2001-03-06 | Mitsubishi Heavy Ind Ltd | Smokeless coal fired burner |
| CN101216173A (en) * | 2007-12-26 | 2008-07-09 | 东方锅炉（集团）股份有限公司 | Double cyclone pulverized coal burner |
| CN202350024U (en) * | 2011-12-12 | 2012-07-25 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner for W flame boiler |
| CN203478233U (en) * | 2013-09-05 | 2014-03-12 | 西安热工研究院有限公司 | Dual-air-regulation low-NOx turbulent burner |
| CN104566358A (en) * | 2013-10-29 | 2015-04-29 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner and boiler |
| CN205640889U (en) * | 2016-03-04 | 2016-10-12 | 烟台龙源电力技术股份有限公司 | Heat -accumulating type combustor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545632B (en) * | 2009-04-30 | 2011-03-30 | 深圳东方锅炉控制有限公司 | Micro oil pulverized coal burner |
| CN101988698A (en) * | 2009-07-31 | 2011-03-23 | 戴卫军 | Cyclone pulverized coal burner |
| CN201662062U (en) * | 2010-04-22 | 2010-12-01 | 林正春 | Cyclone pulverized coal burner |
| CN101865462B (en) * | 2010-06-09 | 2012-01-18 | 清华大学 | Weak-cyclone primary air multi-stage separation cyclone burner |
| CN101832551A (en) * | 2010-06-18 | 2010-09-15 | 上海交通大学 | Adjustable center weak swirl pulverized coal burner |
| CN102393015A (en) * | 2011-05-27 | 2012-03-28 | 上海锅炉厂有限公司 | Dense-phase spiral-flow pulverized-coal burner |
-
2018
- 2018-01-18 CN CN201810048224.8A patent/CN108224416B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0490412A (en) * | 1990-08-06 | 1992-03-24 | Mitsubishi Heavy Ind Ltd | Pulverized coal distributor |
| JP2001059604A (en) * | 1999-08-19 | 2001-03-06 | Mitsubishi Heavy Ind Ltd | Smokeless coal fired burner |
| CN101216173A (en) * | 2007-12-26 | 2008-07-09 | 东方锅炉（集团）股份有限公司 | Double cyclone pulverized coal burner |
| CN202350024U (en) * | 2011-12-12 | 2012-07-25 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner for W flame boiler |
| CN203478233U (en) * | 2013-09-05 | 2014-03-12 | 西安热工研究院有限公司 | Dual-air-regulation low-NOx turbulent burner |
| CN104566358A (en) * | 2013-10-29 | 2015-04-29 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner and boiler |
| CN205640889U (en) * | 2016-03-04 | 2016-10-12 | 烟台龙源电力技术股份有限公司 | Heat -accumulating type combustor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108224416A (en) | 2018-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2475911A (en) | Combustion apparatus | |
| CN102235666B (en) | Pulverized coal burner and pulverized coal fired boiler comprising same | |
| CN107559827B (en) | Ultralow nitrogen gas burner | |
| WO2015062455A1 (en) | Pulverised coal burner and boiler | |
| US2531810A (en) | Air inlet arrangement for combustion chamber flame tubes | |
| CN208804669U (en) | A kind of low nitrogen turbulent burner and burner of wind powder peripheral orientation polarization | |
| RU2349840C1 (en) | Annular combustion chamber of gas-turbine engine | |
| CN107975821A (en) | Gas turbine burner | |
| CN109931605B (en) | Multistage air distribution radial outer thick and inner thin cyclone burner | |
| JPS60171307A (en) | Burner for reducing nox | |
| CN203731484U (en) | Low-cyclone nozzle of combustor | |
| CN103486582A (en) | Center powder feeding turbulent burner with straight sleeve barrel in center | |
| CN220119365U (en) | Flame stabilizer | |
| CN108224416B (en) | Burner with a burner head | |
| CN203571728U (en) | Pulverized coal burner and boiler | |
| CN110107889B (en) | Low-nitrogen burner system with smoke two-way circulation and combustion area segmentation | |
| CA2172203A1 (en) | Short flame xcl burner | |
| CN103822230A (en) | Low-swirl-flow nozzle of combustion chamber | |
| CN204756916U (en) | Brown coal cyclone burner with prevent burnt wind | |
| CN116951472A (en) | Multi-point grading low-pollution combustion chamber head structure based on main combustion prefilming atomization | |
| CN104100971B (en) | A kind of turbulent burner of First air air-coal separating | |
| CN201688400U (en) | Powdered coal burner and powdered coal boiler comprising the same | |
| CN115013973A (en) | Full premix water-cooling gas boiler | |
| CN108413388B (en) | Low-nitrogen cyclone burner with circumferentially offset wind powder | |
| CN221258880U (en) | Coal injection pipe structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |